The possibilites of this plugin are almost endless. The GUI with sequencer-like appearance is complex but intuitive. Few mouse clicks is enough to completely change drumloops or melodies into something you would never discover. Glitch = more creativity and it's definitely a must have :)
ps. Despite being stable for many people, Glitch is still just a prototype. An author asks for fully test especially if you plan to use Glitch in a live performance situation.